Abstract
AbstractThe orientation and deformation mechanisms in the filler and in the matrix of filled natural rubber were studied by ultra small‐angle X‐ray scattering (USAXS) and wide‐angle X‐ray diffraction (WAXD) performed on rubber samples stretched in situ. Using model fillers that give a signal in the wide and in the small‐angle region allowed us to correlate the models developed to interpret the USAXS data with the information obtained from the WAXD data. Due to the simple geometries of aragonite and nano‐sized aluminum oxide, which served as model fillers, an analytical description using form factors can well represent the experimental two‐dimensional USAXS data of oriented stretched samples. Besides the study of the filler structure, an attempt was made to resolve the local strain in the matrix. We took advantage of the peculiar property of natural rubber, that is, strain‐induced crystallization, to unravel the matrix strain by measuring the degree of crystallinity. © 2012 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys, 2012
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